Plugin Builder

Runlayer Plugins

A curated collection of plugins to supercharge your development workflow. Available for both Cursor and Claude Code.

Cursor Plugin

Install from the Cursor Marketplace (search for "runlayer"), or once published:

Component	What it does
Hooks	Validates MCP tool calls against Runlayer backend, blocks access to .env and MCP config files
Rules	Prevents shadow MCP installation, enforces secrets hygiene
Skills	MCP security audit, MCP server builder, Cursor plugin builder
Commands	/runlayer:build-mcp, /runlayer:build-plugin

See cursor-plugin/README.md for full details and setup instructions.

Claude Code Plugins

Add this marketplace to Claude Code:

claude /plugin marketplace add https://github.com/runlayer/plugins

Then install any plugin:

claude /plugin install runlayer-plugins/mcp-builder

Plugin	Description
mcp-builder	Build production-quality MCP servers for any API or service
plugin-builder	Build local plugin scaffolds for Claude Code with Runlayer MCP integration

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mcp-builder

A skill that guides you through building MCP (Model Context Protocol) servers from scratch. Covers architecture decisions, tool design patterns, and implementation workflows.

Supports: TypeScript, Python, and other languages

Triggers:

• "Build an MCP server for [service]"
• "Create MCP tools for [API]"
• "Connect [service] via MCP"

What you get:

• Architecture guidance (transport, state, auth)
• Tool design with proper schemas and annotations
• Shared utilities (retry, error handling, pagination)
• Testing and evaluation workflows
• Quality checklist

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plugin-builder

A skill that guides you through building Claude Code plugin scaffolds. Integrates with Runlayer MCP to discover available servers and configure tool connectors.

Prerequisites: Runlayer MCP must be installed and authorized

Triggers:

• "Create a plugin for [domain]"
• "Build a plugin"
• "Scaffold a new plugin"

What you get:

• Guided workflow with native UI components
• Skills and/or Commands based on your automation preference
• CONNECTORS.md with available integrations
• .mcp.json configured with real Runlayer server URLs
• Proper directory structure for marketplace or standalone use

Output structure:

<plugin-slug>/
├── .claude-plugin/plugin.json
├── skills/<skill-name>/SKILL.md
├── commands/<command>.md
├── CONNECTORS.md
└── .mcp.json (if tools needed)

Contributing

1. Fork this repository
2. Create your plugin in a new directory
3. Add a .cursor-plugin/plugin.json or .claude-plugin/plugin.json manifest
4. Update the relevant marketplace.json to include your plugin
5. Submit a pull request

License

MIT